adding a location and verify

We have two business on one location. One business is ours and another is owned by another person. The only business that shows up on google maps with info is the other business. I would like to get my business on google maps. How do I do that? I tried setting up an account but it always directs to their business and i try to send out a postcard but they took it and verified it. How do I set up my own account and get it to show up when we are googled?